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Klebelsbergite

Year of discovery: 1929 (Baia Sprie (Felsőbánya), Romania), 2009 (Japan)

Locality list: A locality of klebelsbergite

• Sb₄O₄(SO₄)₄(OH)₂
• (Sb,Fe)₄O₄(SO₄)₄(OH)₂
• [(SbO)⁺₄][(OH)₂|SO₄]^4-

• Class: Antimonyl - Sulfate - Hydroxide
• Soluble in: concentrated HCl (Slowly)
• Magnetism: Paramagnetic (by Fe³⁺ contamination)

• Color: Colorless, Dark yellow
• Streak: Pale yellow
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect
• Hardness: 3.5-4
• Density: 4.6

• System: Orthorhombic
• Group: mm2, Pca2₁
• Lattice: a=11.3, b=14.9, c=5.8